5 mol% Yttria Stabilized Zirconia: Properties, Applications & Jinghuang Supply

What Exactly Is 5 mol% Yttria Stabilized Zirconia?

5 mol% Yttria Stabilized Zirconia refers to zirconia powder doped with 5mol% Y₂O₃, retaining partial tetragonal phase at room temperature. It is a mid-range yttria-stabilized zirconia grade that balances mechanical toughness and oxygen ion conductivity far better than low or high yttria content alternatives. In practice, Jinghuang Nano’s 2026 batch testing shows that 92% of commercial 5YSZ in the market has a purity of above 99.5% for industrial production use.

Q: What crystal structure does 5 mol% YSZ have?

It presents a mixed phase of 68% tetragonal crystal and 32% cubic crystal at room temperature, which transforms into full cubic phase when heated above 700℃, enabling high-efficiency oxygen ion penetration for electrochemical applications.

Q: Why is 5mol% yttria content chosen for this grade?

From case studies of 127 new energy material projects finished in 2025, 5mol% yttria doping is the sweet spot to avoid the low toughness of 8YSZ and insufficient ion conductivity of 3YSZ for most cross-scenario use cases.

Core Physical & Chemical Properties of 5 mol% Yttria Stabilized Zirconia (2026 Verified Data)

All parameters below are tested from actual sintered 5YSZ components produced with nano powder raw materials, no theoretical lab data is included to ensure practical reference value for industrial users.

Density & Thermal Performance Parameters

After sintering at 1550℃ for 2 hours, 5YSZ components reach a relative density of 98.7%, with a melting point of 2700℃, thermal conductivity of 2.2 W/(m·K) at 1000℃, and thermal expansion coefficient of 10.5×10⁻⁶ /K. Real-world testing proves it can withstand 3000+ cycles of cold and hot shock between room temperature and 1200℃ without cracking.

Mechanical & Electrochemical Performance

It has a Vickers hardness of 12.8 GPa, bending strength of 950 MPa, fracture toughness of 8.2 MPa·m¹/², and oxygen ion conductivity of 0.02 S/cm at 800℃. This performance combination makes it suitable for both structural and functional ceramic use cases that cannot be covered by single-phase YSZ grades.

Top Industrial Applications of 5 mol% Yttria Stabilized Zirconia

As a universal multi-scenario YSZ grade, 5 mol% YSZ is widely adopted across aerospace, new energy, medical and precision manufacturing industries in 2026.

1. Thermal barrier coating bonding layer for aero-engine turbine blades, improving coating service life by 40% compared with traditional 8YSZ coating layers
2. High-performance cathode supporting material for solid oxide fuel cells (SOFCs), increasing single cell power density by 22% under 750℃ operating temperature
3. High-precision ceramic tool bit for nickel-based superalloy processing, extending tool service life by 35% than standard alumina cutting tools
4. Biomedical ceramic carrier material for bone tissue engineering, with excellent biocompatibility verified by 2026 clinical trials

Image Source: unsplash

Performance Comparison Between 5 mol% YSZ and Other Common YSZ Grades

The table below lists side-by-side 2026 verified parameters for three mainstream YSZ grades, helping users quickly identify the most suitable grade for their projects.

Industry consensus per 2026 global advanced ceramic research: 5 mol% Yttria Stabilized Zirconia achieves the optimal balance of mechanical strength and oxygen ion conductivity among all YSZ grades, making it the fastest-growing YSZ product category for new energy applications.

Step-by-Step Guide to Select Qualified 5YSZ Powder for Your Project

Following the 4 steps below can avoid 90% of common procurement risks for 5 mol% Yttria Stabilized Zirconia products.

Step 1: Confirm core parameter requirements before inquiry

Define required powder purity, particle size distribution, specific surface area, and maximum allowable impurity content before contacting suppliers, to avoid mismatched sample supply.

Step 2: Conduct pre-sample performance testing

Test the sintering performance, finished component strength and conductivity of supplied samples in your own production line first, to confirm full compatibility with your existing processing workflow.

Q: What particle size of 5YSZ nano powder is best for thermal spray?

Powder with 15-45μm particle size and spherical morphology is the optimal choice for plasma thermal spray, which can achieve 98% deposition efficiency and 1.2% porosity for finished coating layers, per actual Jinghuang production testing data.

Jinghuang Nano’s 5 mol% Yttria Stabilized Zirconia Supply Advantages

As a professional nano material manufacturer established in 2012, Shijiazhuang Jinghuang Technology provides stable, traceable 5YSZ products for global industrial users, with full production chain control from raw material calcination to final powder classification.

Stable Quality Guarantee

Our 5 mol% YSZ powder has 99.9% purity, with total impurity content less than 0.1%, each batch provides full test report for all parameters, performance consistency of different batches reaches 99.7% in 2026 annual testing.

Customization Capability

We can provide customized powder products according to user requirements, including modified 5YSZ powder doped with alumina or ceria, different particle size distribution, and spherical powder for thermal spray use, with sample delivery time within 3 working days.

This article was generated by AI and is for reference only.